Troubleshooting
Autumn Fern 'Brilliance' problems — and how to fix them
Autumn Fern 'Brilliance' (Dryopteris erythrosora 'Brilliance') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Loss of coppery new-frond colour
Too little light dulls the signature copper flush. Give brighter indirect light or dappled sun (in cool climates) for vivid new growth.
Brown, crispy frond tips
Dry air or the rootball drying out. Raise humidity and keep the soil evenly moist, mulching outdoor plants.
Scorched fronds
Harsh direct sun, especially indoors behind glass. Move to filtered light or dappled shade.
Tatty old fronds in spring
Winter-damaged evergreen fronds. Cut them back to the crown before the new coppery flush emerges to keep the plant tidy.
Prevent autumn fern 'brilliance' problems before they start
Most autumn fern 'brilliance' issues are care-mismatch, not bad luck. Dial in the basics:
- Common autumn fern problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Autumn Fern 'Brilliance' watering schedule
- Autumn Fern 'Brilliance' light requirements
- Best soil mix for autumn fern 'brilliance'
- Autumn Fern 'Brilliance' temperature & humidity
- Full autumn fern 'brilliance' care guide
Looking for autumn fern 'brilliance' in general rather than its problems? Read the full autumn fern 'brilliance' care guide — light, water, soil and feeding.
Autumn Fern 'Brilliance' problems — FAQ
Why is my autumn fern 'brilliance' loss of coppery new-frond colour?
Too little light dulls the signature copper flush. Give brighter indirect light or dappled sun (in cool climates) for vivid new growth.
Why is my autumn fern 'brilliance' brown, crispy frond tips?
Dry air or the rootball drying out. Raise humidity and keep the soil evenly moist, mulching outdoor plants.
Why is my autumn fern 'brilliance' scorched fronds?
Harsh direct sun, especially indoors behind glass. Move to filtered light or dappled shade.
Why is my autumn fern 'brilliance' tatty old fronds in spring?
Winter-damaged evergreen fronds. Cut them back to the crown before the new coppery flush emerges to keep the plant tidy.